Chief Delphi - Non-sagging Bumpers Q&A Response

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Chief Delphi (http://www.chiefdelphi.com/forums/index.php)

- Technical Discussion (http://www.chiefdelphi.com/forums/forumdisplay.php?f=22)

- - Non-sagging Bumpers Q&A Response (http://www.chiefdelphi.com/forums/showthread.php?t=125384)

Al Skierkiewicz

11-02-2014 15:24

Re: Non-sagging Bumpers Q&A Response

Guys, feeling better now? Thanks to all the LRIs that have helped discuss this issue especially Allen Gregory and Ike for their input.

Ether

11-02-2014 19:04

Re: Non-sagging Bumpers Q&A Response

Just wondering: is there an action item in the queue to clarify Figure 4-5?

AllenGregoryIV

11-02-2014 19:06

Re: Non-sagging Bumpers Q&A Response

Thank You Al and everyone else that helped provide reasonable and rational explanations. The bumper rules feel a lot more robust now and I'll be happy referencing them if problems occur.

It's my understanding that wrapping noodles around the corners is legal again as well.

Al Skierkiewicz

12-02-2014 07:39

Re: Non-sagging Bumpers Q&A Response

Quote:

Originally Posted by AllenGregoryIV (Post 1341489)

It's my understanding that wrapping noodles around the corners is legal again as well.

Did you get an answer on that? I am still working through my email.

Ether, can you elaborate on Fig 4-5 questions?

Ether

12-02-2014 09:44

Re: Non-sagging Bumpers Q&A Response

Quote:

Originally Posted by Al Skierkiewicz (Post 1341688)

Ether, can you elaborate on Fig 4-5 questions?

http://www.chiefdelphi.com/forums/sh....php?p=1339620

Quote:

Originally Posted by AllenGregoryIV (Post 1341489)

It's my understanding that wrapping noodles around the corners is legal again as well.

If wrapping the noodles around corners (and thus inevitably compressing them and distorting their cross-section in violation of the rules as presently stated) is legal, then Fig 4-5 is probably OK. In any event, it would be helpful to state that clearly.

Jon Stratis

12-02-2014 10:01

Re: Non-sagging Bumpers Q&A Response

Quote:

Originally Posted by Ether (Post 1341724)

http://www.chiefdelphi.com/forums/sh....php?p=1339620

If wrapping the noodles around corners (and thus inevitably compressing them and distorting their cross-section in violation of the rules as presently stated) is legal, then Fig 4-5 is probably OK. In any event, it would be helpful to state that clearly.

I agree that it hasn't been stated clearly for the teams, but it has been stated clearly for inspectors on the LRI forums.

jvriezen

12-02-2014 10:09

Re: Non-sagging Bumpers Q&A Response

Quote:

Originally Posted by Jon Stratis (Post 1341732)

I agree that it hasn't been stated clearly for the teams, but it has been stated clearly for inspectors on the LRI forums.

What was the clear statement give to LRIs? Is turning a corner with a noodle acceptable?

Daniel_LaFleur

12-02-2014 10:09

Re: Non-sagging Bumpers Q&A Response

Quote:

Originally Posted by Jon Stratis (Post 1341732)

I agree that it hasn't been stated clearly for the teams, but it has been stated clearly for inspectors on the LRI forums.

Clearly as legal? or clearly as illegal?

martin417

12-02-2014 10:56

Re: Non-sagging Bumpers Q&A Response

Quote:

... To assist in applying the fabric covering, fasteners may be used to attach the pool noodles to the wood backing, so long as the cross section in Figure 4-8 is not significantly altered (e.g. tape compressing the pool noodles)

Does this supersede the previous Q&A? It now looks like it is legal to use fasteners (is tape a fastener?)to hold the noodles to the plywood as long as the noodles aren't compressed. They specifically mention "tape compressing noodles".

EDIT: Never mind, I checked and the Q&A has been updated:

Quote:

Q. Is it legal for teams to use tape, shrink wrap, or other soft material to secure the pool noodles to the wood underneath the bumper fabric? In previous years teams have had issues with pool noodles that would sag below the wood.
2014-01-24 by FRC3847
A. Yes. Please see Team Update 2014-02-11.

Nate Laverdure

12-02-2014 11:00

Re: Non-sagging Bumpers Q&A Response

Quote:

Originally Posted by martin417 (Post 1341756)

Yes, the relevant Q&As have been updated. This is mentioned in the writeup at the beginning of the Team Update 2/11/14:

Quote:

Question 219 in the Q&A asked if Teams could use soft material to secure the pool noodles to the wood during fabrication of the BUMPERS. Since that answer has been posted, we have received feedback from many Lead Robot Inspectors regarding their concern for consistent rulings during Inspections across multiple events. Because of this, we have edited R21-C, D, and E to allow fasteners to be used in this manner so long as the general cross section (Figure 4-8) of the BUMPER is not altered. The answer to Q219 has been updated.

AllenGregoryIV

12-02-2014 11:00

Re: Non-sagging Bumpers Q&A Response

Quote:

Originally Posted by martin417 (Post 1341756)

Correct, they have updated the rules to include the actions that teams have been doing for years.

Jon Stratis

12-02-2014 11:55

Re: Non-sagging Bumpers Q&A Response

Quote:

Originally Posted by jvriezen (Post 1341734)

What was the clear statement give to LRIs? Is turning a corner with a noodle acceptable?

It's acceptable, and in that situation we can expect some amount of compression in the noodles around the corner.

Alan Anderson

12-02-2014 12:01

Re: Non-sagging Bumpers Q&A Response

Quote:

Originally Posted by Jon Stratis (Post 1341796)

It's acceptable, and in that situation we can expect some amount of compression in the noodles around the corner.

Corners have always been somewhat of a special case. They can't really follow the "general cross section" of the main segment of a bumper. It seems that incidentally compressed noodles wrapping around the corner are in the same basic category as noodles extending straight past the bumper backing and vertical noodle pieces.

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